CN205089889U - Current vortex vibration damper - Google Patents
Current vortex vibration damper Download PDFInfo
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- CN205089889U CN205089889U CN201520866220.2U CN201520866220U CN205089889U CN 205089889 U CN205089889 U CN 205089889U CN 201520866220 U CN201520866220 U CN 201520866220U CN 205089889 U CN205089889 U CN 205089889U
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- calutron
- electric convolution
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- shielding case
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Abstract
The utility model discloses a current vortex vibration damper, including shielding shell, load input shaft and two spring shock absorber base, first electric whirl plate and load input shaft fixed connection, fixing support and the inner wall fixed connection who shields the shell, it sets up the bottom at the metal sheet to go up electromagnetic means, electromagnetic means sets up the lower extreme at last electromagnetic means down, second electricity whirl plate sets up the bottom at the shielding shell, the shielding shell assigns into the top of shell, just shielding shell and dual spring fixed connection, the dual spring sets up the inboard at the shell, the bottom fixed connection of rubber base and shell. The utility model discloses it can the less vibration of the external force rate of anti vibration to be equipped with two spring shock absorber bases in the bottom of shielding shell, and simultaneously, the utility model relates to a rationally, have simple structure and damping characteristics such as effectual.
Description
Technical field
The utility model belongs to antivibration area, is specifically related to a kind of electric convolution vibration damping equipment.
Background technique
Along with the development of space technology, the satellite structure vibration caused by vibration source on star and useful load, will become the key factor affecting accurate useful load real work performance, as the image quality etc. of high-resolution remote sensing of the earth, observation camera.In order to satisfied accurate useful load is to the requirement of Satellite Vibration environment, the impact isolating, suppress vibration must be managed.Because astrovehicle safeguards inconvenience in orbit, astrovehicle damper will have high reliability, can adapt to the complex environments such as space high vacuum, heat exchange, and can meet the life requirements of 5 years-15 years in-orbit.Electric convolution vibration damping equipment is that the principle moving or produce in alternating magnetic field eddy current effect based on conductor in magnetic field carrys out work, the advantages such as it has non-contact, mechanical friction and wear, need not lubricate, the life-span is long, meet the requirement of space industry to damper, have bright application prospect.
But, existing vibration damping equipment produces by single electric convolution plate and permanent magnet interaction the object that damping force reaches vibration damping, the damping produced by single electric convolution plate and permanent magnet is poor, and existing electric convolution vibration damping equipment is also simple eddy current damper and can not controls damping force size very well.
Model utility content
The purpose of this utility model is to provide a kind of electric convolution vibration damping equipment, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technological scheme: a kind of electric convolution vibration damping equipment, comprise shielding case, load input shaft and dual spring damping base, the inside of described shielding case is provided with electric convolution generating means, described electric convolution generating means comprises the first electric convolution plate, fixed bearing, sheet metal, upper magnet, lower calutron and the second electric convolution plate, described first electric convolution plate is fixedly connected with load input shaft, described fixed bearing is fixedly connected with the inwall of shielding case, described sheet metal is arranged between fixed bearing and upper calutron, and described sheet metal is arranged between fixed bearing and lower calutron, described upper calutron is arranged on the bottom of sheet metal, described lower calutron is arranged on the lower end of calutron, described second electric convolution plate is arranged on the bottom of shielding case, described dual spring damping base comprises shell, dual spring and rubber base plate, described shielding case assigns into the top of shell, and described shielding case is fixedly connected with dual spring, described dual spring is arranged on the inner side of shell, described rubber base plate is fixedly connected with the bottom of shell.
Preferably, between described first electric convolution plate and fixed bearing, leave space, leave space between described second electric convolution plate and fixed bearing, and the distance in space is 5-30mm.
Preferably, the centre of described upper calutron and lower calutron all has cylindrical hole, and the internal diameter of cylindrical hole is 5-10mm.
Preferably, described upper calutron and lower calutron are arranged in same vertical plane, and upper calutron and lower calutron Magnetic Phase oppose to erect to put, described upper calutron and lower calutron are equipped with permanent magnet and coil, and described coil winding is on the ring surface of permanent magnet.
Technique effect of the present utility model and advantage: this electric convolution vibration damping equipment, arranged on the contrary by upper calutron and lower calutron asymmetric magnetic, can not only damping force be increased, and electric current can be increased by coil or reduce electric current, be conducive to the damping force controlling this electric convolution vibration damping equipment; Compared with conventional art, the utility model is in order to utilize magnetic field better, the first electric convolution plate and the second electric convolution plate is arranged respectively in permanent magnet both sides, when sheet metal moves up and down, when residing magnetic field alternately changes in its moving direction, the electric convolution of respective numbers can be formed therein, with the organization plan of single metal plate comparatively speaking, two vortex boards that active force is contrary can export larger damping force, have better damping capacity; Meanwhile, the utility model be provided with dual spring damping base in the bottom of shielding case can the smaller vibration of antivibration external force; Therefore, the utility model is reasonable in design, has the features such as the simple and good damping result of structure.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is upper calutron structural representation of the present utility model;
Fig. 3 is lower calutron structural representation of the present utility model.
In figure: calutron, 45 times calutrons, 441 permanent magnets, 442 coils, 46 second electric convolution plates on 1 shielding case, 2 load input shafts, 3 dual spring damping base, 31 shells, 32 dual springs, 33 rubber base plates, 4 electric convolution generating means, 41 first electric convolution plates, 42 fixed bearings, 43 sheet metals, 44.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technological scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
The utility model provides a kind of electric convolution vibration damping equipment as Figure 1-3, comprise shielding case 1, load input shaft 2 and dual spring damping base 3, the inside of described shielding case 1 is provided with electric convolution generating means 4, described electric convolution generating means 4 comprises the first electric convolution plate 41, fixed bearing 42, sheet metal 43, upper calutron 44, lower calutron 45 and the second electric convolution plate 46, described first electric convolution plate 41 is fixedly connected with load input shaft 2, described fixed bearing 42 is fixedly connected with the inwall of shielding case 1, described sheet metal 43 is arranged between fixed bearing 42 and upper calutron 44, and described sheet metal 43 is arranged between fixed bearing 42 and lower calutron 45, described upper calutron 44 is arranged on the bottom of sheet metal 43, described lower calutron 45 is arranged on the lower end of calutron 44, the centre of described upper calutron 44 and lower calutron 45 all has cylindrical hole, and the internal diameter of cylindrical hole is 5-10mm, described second electric convolution plate 46 is arranged on the bottom of shielding case 1, space is left between described first electric convolution plate 41 and fixed bearing 42, space is left between described second electric convolution plate 46 and fixed bearing 42, and the distance in space is 5-30mm, described dual spring damping base 3 comprises shell 31, dual spring 32 and rubber base plate 33, described shielding case 1 assigns into the top of shell 31, and described shielding case 1 is fixedly connected with dual spring 32, described dual spring 32 is arranged on the inner side of shell 31, described rubber base plate 33 is fixedly connected with the bottom of shell 31.
Working principle: the design principle of eddy current damper scheme is, when load input shaft 2 drives the first electric convolution plate 41 to move up and down, the magnetic flux of its inside changes, thus forms electric convolution in sheet metal 43, then produce a reverse Lorentz force, hinder the motion of load input shaft.In the process, due to the resistance characteristic of sheet metal 43, electric convolution is converted into Joule heat release.In order to improve damping constant, can be achieved the goal by the magnetic field utilization ratio improving upper calutron 44 and lower calutron 45 in electric convolution generating means 4.Consider the Magnetic field distribution of calutron forever used in the first electric convolution plate 41 damper structure scheme, as fruit structure full symmetric, then in theory the first electric convolution plate 41 and the second electric convolution plate 46 active force symmetrical up and down.Therefore, in order to utilize magnetic field better, all arrange sheet metal 43 at upper calutron 44 and lower calutron 45 both sides.When the first electric convolution plate 41 and the second electric convolution plate 46 move up and down, when residing magnetic field alternately changes in its moving direction, the electric convolution of respective numbers can be formed therein.With the organization plan of single electric convolution plate comparatively speaking, two vortex boards that active force is contrary can export larger damping force, have better damping capacity.Given this, the utility model increases by one block of electric convolution plate on eddy current damper scheme basis, and permanent magnet used is a cylinder type permanent magnet, and centre has a cylindrical hole, is fixed in the middle part of eddy current damper.Its function is for sheet metal provides a non-uniform magnetic-field in its moving direction.When input shaft drives upper and lower sheet metal to move, in sheet metal, produce the electric convolution suppressing its motion, produce damping force, thus passive energy dissipation.
Last it is noted that the foregoing is only preferred embodiment of the present utility model; be not limited to the utility model; although be described in detail the utility model with reference to previous embodiment; for a person skilled in the art; it still can be modified to the technological scheme described in foregoing embodiments; or equivalent replacement is carried out to wherein portion of techniques feature; all within spirit of the present utility model and principle; any amendment of doing, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (4)
1. an electric convolution vibration damping equipment, comprise shielding case (1), load input shaft (2) and dual spring damping base (3), the inside of described shielding case (1) is provided with electric convolution generating means (4), it is characterized in that: described electric convolution generating means (4) comprises the first electric convolution plate (41), fixed bearing (42), sheet metal (43), upper calutron (44), lower calutron (45) and the second electric convolution plate (46), described first electric convolution plate (41) is fixedly connected with load input shaft (2), described fixed bearing (42) is fixedly connected with the inwall of shielding case (1), described sheet metal (43) is arranged between fixed bearing (42) and upper calutron (44), and described sheet metal (43) is arranged between fixed bearing (42) and lower calutron (45), described upper calutron (44) is arranged on the bottom of sheet metal (43), described lower calutron (45) is arranged on the lower end of calutron (44), described second electric convolution plate (46) is arranged on the bottom of shielding case (1), described dual spring damping base (3) comprises shell (31), dual spring (32) and rubber base plate (33), described shielding case (1) assigns into the top of shell (31), and described shielding case (1) is fixedly connected with dual spring (32), described dual spring (32) is arranged on the inner side of shell (31), described rubber base plate (33) is fixedly connected with the bottom of shell (31).
2. a kind of electric convolution vibration damping equipment according to claim 1, it is characterized in that: between described first electric convolution plate (41) and fixed bearing (42), leave space, and leave space between the second electric convolution plate (46) and fixed bearing (42), and the distance in space is 5-30mm.
3. a kind of electric convolution vibration damping equipment according to claim 1, is characterized in that: the centre of described upper calutron (44) and lower calutron (45) all has cylindrical hole, and the internal diameter of cylindrical hole is 5-10mm.
4. a kind of electric convolution vibration damping equipment according to claim 1, it is characterized in that: described upper calutron (44) and lower calutron (45) are arranged in same vertical plane, and upper calutron (44) and lower calutron (45) Magnetic Phase oppose to erect to put, described upper calutron (44) and lower calutron (45) are equipped with permanent magnet (441) and coil (442), and described coil (442) is wrapped on the ring surface of permanent magnet (441).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520866220.2U CN205089889U (en) | 2015-11-03 | 2015-11-03 | Current vortex vibration damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520866220.2U CN205089889U (en) | 2015-11-03 | 2015-11-03 | Current vortex vibration damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205089889U true CN205089889U (en) | 2016-03-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520866220.2U Expired - Fee Related CN205089889U (en) | 2015-11-03 | 2015-11-03 | Current vortex vibration damper |
Country Status (1)
| Country | Link |
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| CN (1) | CN205089889U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105805205A (en) * | 2016-05-18 | 2016-07-27 | 北京空间飞行器总体设计部 | Double-plate linear motion eddy current retarder |
| CN112502939A (en) * | 2020-11-19 | 2021-03-16 | 珠海格力节能环保制冷技术研究中心有限公司 | Vibration damper, compressor and air conditioner |
| CN113803394A (en) * | 2021-09-16 | 2021-12-17 | 北京航空航天大学 | Isolator based on eddy current effect and method |
-
2015
- 2015-11-03 CN CN201520866220.2U patent/CN205089889U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105805205A (en) * | 2016-05-18 | 2016-07-27 | 北京空间飞行器总体设计部 | Double-plate linear motion eddy current retarder |
| CN105805205B (en) * | 2016-05-18 | 2017-12-08 | 北京空间飞行器总体设计部 | A kind of double-plate linear motion eddy current damper |
| CN112502939A (en) * | 2020-11-19 | 2021-03-16 | 珠海格力节能环保制冷技术研究中心有限公司 | Vibration damper, compressor and air conditioner |
| CN113803394A (en) * | 2021-09-16 | 2021-12-17 | 北京航空航天大学 | Isolator based on eddy current effect and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160316 Termination date: 20161103 |